"Wanna" ransomware outbreak. Please see this Sophos article sophos.com/kb/126733 for advice on how to protect your organization. Immediate action recommended.
The following error may appear under the following circumstances:
Known to apply to the following Sophos product(s) and version(s) PureMessage for Microsoft Exchange 3.1.0PureMessage for Microsoft Exchange 3.1.1PureMessage for Microsoft Exchange 3.1.2
Within the Sophos PureMessage Config directory there will be a folder 'LastKnown_Old'
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